165043443652 has 12 divisors (see below), whose sum is σ = 288855126700. Its totient is φ = 82513407456.

The previous prime is 165043443629. The next prime is 165043443659. The reversal of 165043443652 is 256344340561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 109490839236 + 55552604416 = 330894^2 + 235696^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165043443599 and 165043443608.

It is not an unprimeable number, because it can be changed into a prime (165043443659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2033823 + ... + 2113414.

Almost surely, 2^165043443652 is an apocalyptic number.

It is an amenable number.

165043443652 is a deficient number, since it is larger than the sum of its proper divisors (123811683048).

165043443652 is a wasteful number, since it uses less digits than its factorization.

165043443652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4157190 (or 4157188 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 165043443652 in words is "one hundred sixty-five billion, forty-three million, four hundred forty-three thousand, six hundred fifty-two".